Gekko has developed a bowl replacement system for all common batch centrifugal concentrators including the InLine Spinner and other gravity gold recovery devices. The new liner system can be simply fitted to any of the existing BCC units. The hydrophobic bowl liner replaces the previous riffle system technology made of polyurethane, ceramic, rubber and stainless steel, and offers greater wear durability and lower cost.Nick Katsikaros, Gekko’s Product Improvement Manager, said, “It’s a really exciting development for us and we hope it will pave the way for future innovation in this area”.  The new liner incorporates micropore technology with a grown organic microfiber and was developed in line with the company’s strategy to provide environmentally friendly mining equipment and processes. Katsikaros added, “The new liner uses a superfine sawtooth riffle profiled fibre. This design has been based on years of research around the notion that even flow rate distribution promotes perfect dispersion of water flow in the concentration layer”.The secret to the super recovery achieved to date in trials according to Gekko is the ultra thin film technology, made possible by the lubricity of the dispersed water layer at the interface between injection water and slurry feed. High density particles are trapped in the micro-riffle whilst back pressure water generates a teeter-bed separation at the interface. The fabric is attached to a specially grown and perforated backing layer which acts to promote the primary water dispersion as well as control back-pressure required for water flow control. In previous designs the lining materials could deteriorate after usage and required regular replacement at a high cost. This new innovation will minimise the level of maintenance and costs associated with general wear and tear on the machinery whilst radically increasing performance of the unit.